blob: 3d390e3134fdae232278451de3444f7c73c21b90 [file] [log] [blame]
/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef DEFAULT_CAMERA_HAL_REQUEST_TRACKER_H_
#define DEFAULT_CAMERA_HAL_REQUEST_TRACKER_H_
#include <map>
#include <memory>
#include <set>
#include <android-base/macros.h>
#include <hardware/camera3.h>
#include "capture_request.h"
namespace default_camera_hal {
// Keep track of what requests and streams are in flight.
class RequestTracker {
public:
RequestTracker();
virtual ~RequestTracker();
// Configuration methods. Both have undefined effects on in-flight requests,
// and should only be called when empty.
// Add configured streams. Replaces the previous configuration if any.
virtual void SetStreamConfiguration(
const camera3_stream_configuration_t& config);
// Reset to no configured streams.
virtual void ClearStreamConfiguration();
// Tracking methods.
// Track a request.
// False if a request of the same frame number is already being tracked
virtual bool Add(std::shared_ptr<CaptureRequest> request);
// Stop tracking a request.
// False if the given request is not being tracked.
virtual bool Remove(std::shared_ptr<CaptureRequest> request = nullptr);
// Empty out all requests being tracked.
virtual void Clear(
std::set<std::shared_ptr<CaptureRequest>>* requests = nullptr);
// Accessors to check availability.
// Check that a request isn't already in flight, and won't overflow any
// streams.
virtual bool CanAddRequest(const CaptureRequest& request) const;
// True if the given stream is already at max capacity.
virtual bool StreamFull(const camera3_stream_t* handle) const;
// True if a request is being tracked for the given frame number.
virtual bool InFlight(uint32_t frame_number) const;
// True if no requests being tracked.
virtual bool Empty() const;
private:
// Track for each stream, how many buffers are in flight.
std::map<const camera3_stream_t*, size_t> buffers_in_flight_;
// Track the frames in flight.
std::map<uint32_t, std::shared_ptr<CaptureRequest>> frames_in_flight_;
DISALLOW_COPY_AND_ASSIGN(RequestTracker);
};
} // namespace default_camera_hal
#endif // DEFAULT_CAMERA_HAL_REQUEST_TRACKER_H_